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# Copyright 2015 MongoDB, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
import itertools
import unittest
import pytest
try:
from mockupdb import MockupDB, OpMsg, going
_HAVE_MOCKUPDB = True
except ImportError:
_HAVE_MOCKUPDB = False
from operations import operations # type: ignore[import]
from pymongo import MongoClient, ReadPreference
from pymongo.common import MIN_SUPPORTED_WIRE_VERSION
from pymongo.read_preferences import (
_MONGOS_MODES,
make_read_preference,
read_pref_mode_from_name,
)
pytestmark = pytest.mark.mockupdb
class TestMongosCommandReadMode(unittest.TestCase):
def test_aggregate(self):
server = MockupDB()
server.autoresponds(
"ismaster",
ismaster=True,
msg="isdbgrid",
minWireVersion=2,
maxWireVersion=MIN_SUPPORTED_WIRE_VERSION,
)
self.addCleanup(server.stop)
server.run()
client = MongoClient(server.uri)
self.addCleanup(client.close)
collection = client.test.collection
with going(collection.aggregate, []):
command = server.receives(aggregate="collection", pipeline=[])
self.assertFalse(command.slave_ok, "SlaveOkay set")
command.ok(result=[{}])
secondary_collection = collection.with_options(read_preference=ReadPreference.SECONDARY)
with going(secondary_collection.aggregate, []):
command = server.receives(
OpMsg(
{
"aggregate": "collection",
"pipeline": [],
"$readPreference": {"mode": "secondary"},
}
)
)
command.ok(result=[{}])
self.assertTrue(command.slave_ok, "SlaveOkay not set")
def create_mongos_read_mode_test(mode, operation):
def test(self):
server = MockupDB()
self.addCleanup(server.stop)
server.run()
server.autoresponds(
"ismaster",
ismaster=True,
msg="isdbgrid",
minWireVersion=2,
maxWireVersion=MIN_SUPPORTED_WIRE_VERSION,
)
pref = make_read_preference(read_pref_mode_from_name(mode), tag_sets=None)
client = MongoClient(server.uri, read_preference=pref)
self.addCleanup(client.close)
with going(operation.function, client):
request = server.receive()
request.reply(operation.reply)
if operation.op_type == "always-use-secondary":
self.assertEqual(ReadPreference.SECONDARY.document, request.doc.get("$readPreference"))
slave_ok = mode != "primary"
elif operation.op_type == "must-use-primary":
slave_ok = False
elif operation.op_type == "may-use-secondary":
slave_ok = mode != "primary"
actual_pref = request.doc.get("$readPreference")
if mode == "primary":
self.assertIsNone(actual_pref)
else:
self.assertEqual(pref.document, actual_pref)
else:
self.fail("unrecognized op_type %r" % operation.op_type)
if slave_ok:
self.assertTrue(request.slave_ok, "SlaveOkay not set")
else:
self.assertFalse(request.slave_ok, "SlaveOkay set")
return test
def generate_mongos_read_mode_tests():
matrix = itertools.product(_MONGOS_MODES, operations)
for entry in matrix:
mode, operation = entry
if mode == "primary" and operation.op_type == "always-use-secondary":
# Skip something like command('foo', read_preference=SECONDARY).
continue
test = create_mongos_read_mode_test(mode, operation)
test_name = "test_{}_with_mode_{}".format(operation.name.replace(" ", "_"), mode)
test.__name__ = test_name
setattr(TestMongosCommandReadMode, test_name, test)
generate_mongos_read_mode_tests()
if __name__ == "__main__":
unittest.main()
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